JP7467228B2 - Piping structure - Google Patents

Description

The present invention relates to a piping structure that allows problem areas to be easily identified.

A piping structure is known from, for example, the following Patent Document 1. This conventional piping structure includes a piping section through which wastewater flows from a drainage facility such as a toilet installed in a building, and this piping section includes a manhole and piping buried in the ground of the building's land.

JP-A-11-241383 (FIG. 2)

However, in the above-mentioned conventional piping structure, even if a problem (such as damage or poor adhesion) occurs in the manhole or pipe of the piping section, it is difficult to identify the problem area because the manhole and pipe of the piping section are buried underground (in the soil).

The present invention has been developed in consideration of these points, and aims to provide a piping structure that makes it easy to identify problem areas.

The piping structure according to the present invention comprises a groove provided in a housing site, and an in-groove piping portion provided in the groove through which wastewater flows .

In the piping structure according to the present invention , the groove portion may be fixed to a foundation of a building erected on the residential land.

Furthermore, the piping structure according to the present invention may further include a lid for opening and closing an upper opening of the groove portion .

In the piping structure according to the present invention , the groove portion may be usable as a water storage portion.

Furthermore, in the piping structure according to the present invention , the in - groove piping portion may have a support means attached to the groove portion, and a piping supported by the support means.

In addition, in the piping structure according to the present invention , the support means may include a mounting body attached to the groove portion, and a support body that is provided on the mounting body so as to be adjustable in vertical position and supports the piping .

Furthermore, in the piping structure according to the present invention , the support body may have an annular support portion having a diameter larger than an outer diameter of the piping , and the piping may be inserted through the support portion .

In addition, in the piping structure according to the present invention , the in- groove piping portion may have a pipe inserted into an insertion hole of the groove portion, and a buffer member may be provided between the pipe and the insertion hole.

Furthermore, in the piping structure according to the present invention , rainwater from the building side may flow into the groove portion, and sewage from the building side may flow into the groove piping portion located within the groove portion .

In the piping structure according to the present invention , rainwater that has flowed into the groove portion may be discharged into a roadside gutter.

Furthermore, in the piping structure according to the present invention, the groove portion may be constituted by a groove body buried in the ground of the housing site.

The present invention makes it easy to identify problem areas.

1 is a schematic plan view showing a piping structure according to an embodiment of the present invention. FIG. FIG. FIG. 4 is an enlarged cross-sectional view of a portion of FIG. 3 . FIG. 4 is a side view showing a support means for the in-groove piping portion of the piping structure. FIG. 11 is a cross-sectional view showing a comparative example in which a joint is damaged by an earthquake. A cross-sectional view showing a modified example in which a groove body is fixed to the foundation of a building. FIG. 11 is a cross-sectional view showing a modified example of the supporting means. 13 is a cross-sectional view showing a modified example equipped with an opening/closing body for opening and closing the rainwater outflow hole. FIG.

An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a piping structure for drainage, which is a structure for draining drainage from a building 3 built on a residential lot 2 to a sewer or the like outside the residential lot 2. The building 3 is, for example, an individual house or a small apartment complex, and multiple drainage facilities (toilet, bathroom, washroom, kitchen, etc.) 4 are installed inside the building 3.

As shown in FIG. 1, the piping structure 1 includes a building-side piping section 6 connected to each drainage system 4 in a building 3 such as a house, an in-ditch piping section 7 connected to the downstream end of each of the building-side piping sections 6, and an outside-ditch piping section 8 connected to the downstream end of the in-ditch piping section 7, the downstream end of which is connected to a sewer main pipe 9 under a road.

The piping structure 1 also includes a longitudinal groove 10 that is provided on the land 2 of the building 3 so as to be positioned along the outer periphery of the building 3, and an in-groove piping section 7 through which wastewater, which is drainage from the building 3 side, flows is provided in the groove 10.

The trench portion 10 is composed of a groove-shaped trench body 11 buried in the ground, for example, in a portion of the land 2 of the building 3 that is located between the periphery of the building 3 and the boundary of the land 2. This trench body 11 is arranged in an L-shape in plan view along the periphery of the building 3 within the land 2, and is buried a predetermined distance away from the foundation 5 of the building 3.

The gutter body 11 is, for example, a U-shaped gutter made of concrete, and has a bottom plate portion 13, side plate portions 14 on both sides erected on the side edges of the bottom plate portion 13, and end plate portions 15 on both ends erected on the end edges of the bottom plate portion 13.

The groove body 11 also has a top opening 17 that opens the internal space 16 inside the groove body 11 upward, and this top opening 17 can be opened and closed by a lid body 21 that can be attached and detached to the groove body 11 (see Figure 3). The lid body 21 has a light-blocking property that blocks light such as sunlight from entering the groove body 11, and has a plate-shaped lid main body part 22 that is located on the same plane as the ground surface of the housing site 2 and closes the top opening 17 in an openable and closable manner, and downward protrusions 23 that protrude downward from both sides of the lid main body part 22. The lid body 21 is composed of a plurality of divided lids that are divided into predetermined lengths, for example.

Furthermore, the downstream end of a rainwater supply pipe 25, which is a pipe that supplies rainwater drained from the roof of the building 3, etc., into the gutter body 11, is connected to the end plate portion 15 on the upstream end side of the gutter body 11. Note that this rainwater supply pipe 25 may be connected to the side plate portion 14 of the gutter body 11 instead of the end plate portion 15 on the upstream end side. Also, the upstream end of an overflow pipe 26, which is a pipe whose downstream end is connected to the road gutter 20, is connected to the end plate portion 15 on the downstream end side of the gutter body 11.

For example, when it rains, rainwater from the building 3 flows through the gutter 11 and is discharged (removed) into the roadside gutter 20 via the overflow pipe 26. The gutter 11 can also be used as a water storage section (water tank) that can store rainwater in the internal space 16, so the rainwater stored in the gutter 11 can be used for watering plants or as emergency water. The water storage gutter 11 is buried underground in the land 2 of the building 3, so unlike above-ground tanks installed on the ground surface of the land 2, it does not interfere with the garden scenery and does not have a negative impact on the design or aesthetics.

As shown in Figures 1 to 3, the in-ditch piping section 7 has a number of manholes 31, a number of pipes 32 connected to the manholes 31, and a number of support means 33 that support the pipes 32 so that the pipes 32 are inclined at a predetermined downward gradient, and the manholes 31, the pipes 32, and the support means 33 are located within the groove body 11. Note that a portion of a predetermined pipe among the multiple pipes 32 extends outside the groove body 11.

As shown in Fig. 2, the pipe 32 (32a) at the downstream end of the in-ditch piping section 7 is inserted into the insertion hole 35 formed in the end plate section 15 at the downstream end of the ditch body 11, and a buffer member 36 is interposed between these pipes 32 (32a) and the insertion hole 35. Similarly, as shown in Fig. 3, the pipes of each building side piping section 6, that is, the pipes 32 (32b) whose upstream end is connected to the bent pipe 38 inserted into the through tube 37 penetrating the foundation 5 of the building 3 and whose downstream end is connected to the connection port 31a of the manhole (drainage manhole in the ditch) 31 via a joint (elbow) 39, are made of straight pipes that are positioned horizontally without bending parts, and are inserted into the insertion hole 35 formed in the side plate section 14 of the ditch body 11, and a buffer member 36 is interposed between these pipes 32 (32b) and the insertion hole 35.

The buffer member 36 is, for example, an elastically deformable, annular packing (such as a rubber ring) that has buffer and watertight functions. In order to save space in the internal space 16 of the groove body 11, the joining direction to the manhole 31 coincides with the longitudinal direction of the groove body 11 in a plan view. In the example shown in FIG. 3, the joining direction is inclined at the connection port 31a of the manhole 31, but it is also possible to make the connection port 31a of the manhole 31 horizontal so that the joining direction is parallel. An opening/closing lid 30 is detachably attached to the cleaning port 31b of the manhole 31.

To improve earthquake resistance, the portion that penetrates the foundation 5 of the building 3 is preferably configured using a penetration tube 37 as shown in FIG. 3 or a joint material that can slide in the penetration direction. Also, in order to be able to follow vertical and horizontal seismic movements during an earthquake, for example, all or part of the building side piping section 6 and all or part of the piping section connecting the building side piping section 6 and the manhole 31 may be made of flexible pipes. The foundation 5 of the building 3 is made of, for example, reinforced concrete, and is set on basin concrete 41 and crushed stone 42.

The support means 33 for supporting the piping 32 in the groove body 11 includes a mounting body 51 fixed to the upper surface (groove bottom surface) 13a of the bottom plate portion 13 of the groove body 11 by means of a mounting fixture 50 such as a screw, as shown in Figures 4 and 5, and a support body 52 that is vertically adjustable and supports the piping 32 on the mounting body 51.

The mounting body 51 has a pair of vertical rod members 53 that face each other at a distance, and these two rod members 53 are connected by a connecting plate 54, which is fixed to the upper surface 13a of the bottom plate portion 13 of the groove body 11 by the mounting fixture 50.

The support body 52 is made up of upper and lower plate members 57 that are positioned and fixed at the desired position of the rod member 53 of the mounting body 51 by short cylindrical stoppers 56, and has an annular support part 58 with a diameter larger than the outer diameter of the cylindrical pipe 32. Each plate member 57 has a semicircular curved plate part 61 that constitutes the support part 58, and flat plate parts 62 connected to both ends of the curved plate part 61, and a hole 63 is formed in the flat plate part 62, and the rod member 53 is inserted into the hole 63.

The pipe 32 is inserted into the support section 58 of the support 52 and is supported from below. This makes it easy to adjust the slope of the pipe 32 by adjusting the vertical position of the support 52, and allows earthquake motion to escape without requiring the area around the screw to have a special shape, preventing damage to the in-groove pipe section 7 due to earthquakes.

On the other hand, the outside-ditch piping section 8 guides wastewater (e.g., sewage only) from the inside-ditch piping section 7 installed inside the ditch body 11 to the public sewer main pipe 9, and has a drop manhole 66 to which the downstream end of the piping 32 (32a) extending outside the ditch body 11 is connected, as shown in FIG. 2, and this drop manhole 66 is connected to a public manhole 68 via a connecting pipe 67. This public manhole 68 is connected to the sewer main pipe 9 via an attachment pipe 69.

As shown in FIG. 2, the road gutter 20 is a U-shaped concrete gutter (e.g., both of the same depth) like the gutter body 11 in the housing estate 2, and the gutter 20 and the gutter body 11 are connected by an overflow pipe 26, which is a connecting pipe. That is, the upstream end of the overflow pipe 26 is connected to the rainwater outflow hole 27 of the gutter body 11, and the downstream end of the overflow pipe 26 is connected to the rainwater inlet hole 28 of the gutter 20. Therefore, the gutter body 11 is a gutter that is deep relative to the rainwater outflow hole 27 for draining rainwater toward the gutter 20, so it also has a mud pit effect.

Next, the function of piping structure 1 will be explained.

Wastewater from the drainage system 4 inside the building 3 flows through the building side piping section 6, the in-ditch piping section 7, and the outside-ditch piping section 8, before being discharged into the sewer main pipe 9 under the road. In addition, rainwater from the roof of the building 3 during rainy weather flows through the rainwater supply pipe 25, the ditch body 11, and the overflow pipe 26, before being discharged into the roadside gutter 20.

And with this piping structure 1, by removing the cover 21 from the groove body 11 and opening the top opening 17 of the groove body 11, the manhole 31 and the pipe 32 of the in-groove piping section 7 located within the groove body 11 can be visually inspected. Therefore, even if problems such as damage or poor adhesion occur in the manhole 31 or the pipe 32, the problem area can be easily identified.

In other words, for example, if the inside of the groove body 11 is wet due to wastewater flowing out from a problem location such as a break, the problem location of the groove piping section 7 can be easily identified by examining the part of the groove piping section 7 that corresponds to the wet location. Even if rainwater is stored inside the groove body 11, air bubbles will come out from the problem location such as a break, making it easy to identify the problem location of the groove piping section 7.

Moreover, after the worker carries out the appropriate repair work on the problem area, such as replacing the damaged pipe 32 or applying adhesive to areas with poor adhesion, the worker can then attach the cover 21 to the gutter body 11 and close the top opening 17 of the gutter body 11. In this way, the worker does not need to excavate the ground surface of the residential land 2 to carry out the repair work, which reduces the burden on the worker and therefore reduces the costs required for repairs, maintenance, etc.

In addition, for example, when an earthquake occurs, the in-ditch piping section 7 in the trench body 11 is not directly affected by earth pressure caused by seismic motion, so damage to the in-ditch piping section 7 due to earthquakes can be prevented (suppressed).

For example, in a configuration in which the piping section 71 connected to the curved pipe 38 of the building-side piping section 6 is buried underground in the housing site 2 together with the drainage basin 72 and drainage pipe 73 as shown in FIG. 6, the piping section 71 is directly affected by the earth pressure caused by seismic motion (ground vibration) during an earthquake, and there is a risk that the joints 74, 75, etc. of the piping section 71 may be damaged due to differences in the amount of displacement between the ground and the building, but the piping structure 1 can prevent damage to the trench piping section 7 due to an earthquake.

Furthermore, in this piping structure 1, a buffer member 36 is provided between a portion of the piping 32 (32a, 32b) of the in-groove piping section 7 and the insertion hole 35, and the other portion of the piping 32 of the in-groove piping section 7 is inserted and supported by an annular support section 58 whose diameter is larger than the outer diameter of the piping, so that damage to the in-groove piping section 7 can be prevented even more appropriately.

To further reduce the load on the in-ditch piping section 7 during an earthquake, the groove body 11 may be fixed to the outer surface of the foundation 5 of the building 3 using a fixing means (not shown) such as a bolt, as shown in FIG. 7. Also, as shown in FIG. 7, wiring (electric wires, optical cables, etc.) 81 may be provided inside the groove body 11, and specifically, the wiring 81 may be arranged on a wiring support 82 fixed to the inner surface of the groove body 11. Although not shown, the foundation of the building and the groove body may be formed integrally, for example, from concrete, etc.

The support means 33 for the in-ditch piping section 7 may be, for example, as shown in FIG. 8, composed of a single plate member (such as a band for buoyancy countermeasures) 84 having a semicircular support section 83 that supports the upper part of the piping 32. This plate member 84 is attached to the upper surface 13a of the bottom plate section 13 of the groove body 11 by means of mounting fixtures 85 such as screws so that it can move along this upper surface 13a, allowing seismic motion to escape.

Furthermore, the piping structure 1 may be configured to have a plate-shaped opening/closing body 87 that is an opening/closing means for opening and closing the rainwater outflow hole 86 of the gutter body 11, as shown in FIG. 9. That is, in the configuration shown in FIG. 9, the gutter body 11 in the housing site 2 and the gutter 20 outside the housing site 2 are connected by a connecting pipe 88, and the upstream end of this connecting pipe 88 is connected to the rainwater outflow hole 86 of the gutter body 11, and the downstream end of this connecting pipe 88 is connected to the rainwater inlet hole 89 of the gutter 20. The rainwater outflow hole 86 is formed in the lower part of the end plate portion 15 of the gutter body 11, and the rainwater inlet hole 89 is formed in the lower part of the side plate portion 90 of the gutter 20. The opening/closing body 87 is provided so as to be able to rise and fall within the gutter body 11, and can be selectively switched between an open state in which the rainwater outflow hole 86 is opened and a closed state in which the rainwater outflow hole 86 is closed.

In normal times, the opening and closing body 87 is open and the rainwater outflow hole (drainage outlet) 86 is open, so that rainwater flowing into the gutter body 11 from the building 3 side flows out of the rainwater outflow hole 86, flows through the connecting pipe 88, and flows into the gutter 20 through the rainwater inlet hole 89. In this way, rainwater can be discharged through the gutter body 11, but when water is needed, for example, in an emergency, the opening and closing body 87 is closed to close the rainwater outflow hole 86, so that water such as rainwater can be stored in the gutter body 11. In other words, by switching the opening and closing body 87 from the open state to the closed state, the gutter body 11 can be used as a water storage section. The opening and closing means for opening and closing the rainwater outflow hole 86 of the gutter body 11 may be, for example, an opening and closing cover that is detachable from the rainwater outflow hole 86. In addition, for example, a configuration that uses both the opening and closing means for opening and closing the rainwater outflow hole of the gutter body and an overflow pipe that is a connecting pipe that connects the gutter body to the road gutter may be used.

The gutter section of the gutter body is not limited to one that can be used as a water storage section, and may be, for example, a permeable type that allows rainwater to permeate into the ground. Furthermore, the gutter section may be provided by excavating the ground surface of the building site, or may not be connected to the gutter. On the other hand, the gutter section may be directly connected to the gutter without using a connecting pipe, etc.

Furthermore, the in-ditch piping section is not limited to one through which only sewage flows, but may be one through which both sewage and rainwater flow, or one through which only rainwater flows.

The piping section inside the trench may also have a sewage piping section consisting of a sewage pipe and a sewage manhole through which sewage flows, and a rainwater piping section consisting of a rainwater pipe and a rainwater manhole through which rainwater flows, i.e., the sewage flow path and the rainwater flow path may be separately provided within the trench. Furthermore, in addition to the piping section inside the trench for drainage, for example, water supply pipes, gas pipes, wiring, etc. may also be provided within the trench.

Furthermore, if a transparent pipe is used for the piping in the trench piping section, the pipe sections other than the manhole can be easily inspected by simply opening the lid. Also, if the piping is transparent, there is no need to provide a manhole (inspection hatch, etc.) where the piping joins the trench piping section, and in the event of a problem, the piping can be cut off and the inside of the pipe cleaned. Furthermore, the trench piping section may be equipped with a spear joint or a spear function that allows for internal maintenance. Also, the joining section (connection section) between the building side piping section and the trench piping section may be something other than a manhole, as long as it is a location that does not require inspection; for example, a T-shaped or Y-shaped joint may be used.

In addition to providing light-blocking properties, it is preferable to attach a watertight member such as a packing that fills the gap between the cover and the groove to suppress the growth of algae and mosquito larvae. This watertight member fills the gap and improves watertightness, thereby not only blocking light but also appropriately suppressing the growth of algae and mosquito larvae in the stored water. Furthermore, the cover is not limited to those that have light-blocking properties, and may be, for example, a grating, or a grating with a mesh member such as an insect screen attached to it. Note that a cover is not necessarily required, and the top opening of the groove may be always open.

Furthermore, the piping structure for drainage (sewerage) is not limited to one that guides drainage (sewage) from the building side to the sewer system, but may be, for example, one that guides drainage from the building side to a drainage purification unit such as a septic tank. Also, the land on which the gutter is provided is land used as the site of a building, and the building may be, for example, an office building, a factory, a store, etc., other than a house, and is optional.

The above-described embodiments and modifications may be combined as appropriate without departing from the spirit of the present invention.

1 Piping structure 2 Land 3 Building 5 Foundation (foundation of building)
7. Pipe inside groove
10 Groove
11 Groove body
17 Top opening
20. Roadside gutters
21 Lid
32 Piping
33 Support Means
35 Insertion hole
36 Cushioning material
51 Mounting body
52 Support
58 Support

Claims (7)

A groove provided in a residential area;
A groove piping portion is provided in the groove portion and through which drainage water flows ,
The groove portion is configured by a groove body that can be used as a water storage portion capable of storing rainwater.
A piping structure characterized by: A rainwater supply pipe is connected to the gutter body to supply rainwater into the gutter body.
2. The piping structure according to claim 1. An overflow pipe is connected to the gutter body to drain rainwater from the gutter body.
3. The piping structure according to claim 1 or 2. The groove body has a rainwater outflow hole formed in an end plate portion on the downstream end side of the groove body.
4. The piping structure according to claim 1, wherein the piping structure is a piping structure having a piping member. The trench body is buried in the ground of the residential area along the outer periphery of the building, and has an upper opening that opens an internal space of the trench body upward,
The upper opening is closed by a light-shielding cover that is located on the same plane as the ground surface of the housing site and can be opened and closed.
5. The piping structure according to claim 1, wherein the piping structure is a piping structure having a piping member. The piping in the groove is
a support means attached to the groove;
A pipe supported by the support means,
The support means is
a mounting body attached to the groove body;
a support body that is vertically adjustable and supports the piping;
6. The piping structure according to claim 1, The in-groove piping portion has a pipe inserted into the insertion hole of the groove body,
A buffer member is provided between the pipe and the insertion hole.
7. The piping structure according to claim 1, wherein the piping structure is a piping structure having a piping member.

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